This reverts merge request !26430

There is nothing more to say but

"Commits that change 30 or more lines across at least three files
must describe these changes in the commit body"

Created new emojis map in public folder

Renamed folder to emojis

Loading now the emojis from Localstorage or from Server

Moved all emojis to the public folder

Loading the emojis.json file now through AJAX

Loads now the map in the web element instead when building the emoji tag

Updated the custom Element Setup to modern method

Fixed Emoji Karma Specs for async loading

Loading now the emojis from Localstorage or from Server

Loads now the map in the web element instead when building the emoji tag

Fixed problem with FIXTURE_PATH for emojis fixtures

Fixes Linting Error in gemojione.rake

Fixed Emoji Karma Specs

Fix static type check in gemojione and check if already registered

Testing if the Emoji Support Check is failing Rspec

Change of CLass Name, returning true on check to test

Fixes failing Emoji RSpec Tests

Moved Emojis into public/-/emojis/1/

Fixed Linting Errors in gl_emoji

Fix to fixtures creation for emojis

Fixed path spec for new subdirectory -/emojis

Optimized emojis.json output

Fix for Emoji Spec failure due to unicode dataset

Better catch handling for emojis

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/38871

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/27655

See https://gitlab.slack.com/archives/frontend/p1489690607738864

Thanks @filipa for the shout`

 - gl_emoji for falling back to image/css-sprite when the browser
   doesn't support an emoji
 - Markdown rendering (Banzai filter)
 - Autocomplete
 - Award emoji menu
    - Perceived perf
    - Immediate response because we now build client-side
 - Update `digests.json` generation in gemojione rake task to be more
   useful and  include `unicodeVersion`

MR: !9437

See issues

 - #26371
 - #27250
 - #22474

Ports changes from https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/642 back into CE